i.o.nonen.(名词)A colorless to yellowish liquid, C3H 20O, having a strong odor of violets and used in perfumes. 紫罗(兰)酮:一种无色至淡黄色的液体,C3H 20O,有强烈的紫罗兰香味,被用来制造香水 来源:[Formerly a trademark] [以前的一个商标]